Adam has been in love with his best friend Nicola since college, but the closest he can come to admitting his feelings is inviting her to travel with him to Scotland in search of a legendary cave from his grandfather’s bedtime stories. When a storm washes out the road, Adam and Nicola find themselves at the mercy of Eileen, an eccentric aristocrat, and Finley, her brooding groundskeeper. The Americans quickly get more than they bargained for as they become entangled in Eileen and Finley’s world of mind games, kink, and ancient enchantment.